All water systems in Wisconsin
9,089 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Lake Arrowhead 14 Restroom Lake 4 Nekoosa · Adams County |
25 | 0 | 0 | |
|
Lake Arrowhead 15 Nekoosa · Adams County |
25 | 0 | 0 | |
|
Lake Arrowhead 3 South Lake Nekoosa · Adams County |
25 | 0 | 0 | |
|
Lake Arrowhead 4 West Lake Nekoosa · Adams County |
25 | 0 | 0 | |
|
Lake Arrowhead 5 North Lake Nekoosa · Adams County |
25 | 0 | 0 | |
|
Lake Arrowhead 6 Pines 15 Nekoosa · Adams County |
25 | 0 | 0 | |
|
Lake Arrowhead 7 Pines 7 Nekoosa · Adams County |
25 | 0 | 0 | |
|
Lake Arrowhead 8b Sports & Cmpng Nekoosa · Adams County |
25 | 0 | 0 | |
|
Lake Arrowhead Cmpgd S Montello · Marquette County |
25 | 1 | 0 | |
|
Lake Arrowhead Cmpgd W Montello · Marquette County |
25 | 0 | 0 | |
|
Lake Arrowhead Pines Main Clubhouse Nekoosa · Adams County |
25 | 0 | 0 | |
|
Lake Arrowhead the Lakes Lounge Nekoosa · Adams County |
25 | 0 | 0 | |
|
Lake Country Trail West Oconomowoc · Waukesha County |
25 | 0 | 0 | |
|
Lake Dubay CO Park Stevens Point · Portage County |
25 | 0 | 0 | |
|
Lake Dubay CO Park Shower Building Stevens Point · Portage County |
25 | 0 | 0 | |
|
Lake Dubay Lions Club Park Mosinee · Marathon County |
25 | 0 | 0 | |
|
Lake Effect Dance Poplar · Douglas County |
25 | 0 | 0 | |
|
Lake Emily CO Park Campground-South Amherst Junction · Portage County |
25 | 0 | 0 | |
|
Lake Emily CO Park Cmpgd West Picnic Amherst Jct · Portage County |
25 | 0 | 0 | |
|
Lake Emily CO Park East Picnic Lower Lodge Amherst Jct · Portage County |
25 | 0 | 0 | |
|
Lake Emily CO Park Shower Bldg Amherst Junction · Portage County |
25 | 0 | 0 | |
|
Lake Emily CO Park West Shower House Amherst Junction · Portage County |
25 | 0 | 0 | |
|
Lake Emily CO Park-New Lodge Amherst Junction · Portage County |
25 | 0 | 0 | |
|
Lake Forest Rsrt & Clb Bldg 1-8 Eagle River · Vilas County |
25 | 0 | 0 | |
|
Lake Forest Rsrt & Clb Office Eagle River · Vilas County |
25 | 0 | 0 | |
|
Lake Hallie Village Park Chippewa Falls · Chippewa County |
25 | 0 | 0 | |
|
Lake Helen CO Park Stevens Point · Portage County |
25 | 0 | 0 | |
|
Lake Hilbert Cmpgd Goodman Tn · Marinette County |
25 | 3 | 1 | |
|
Lake Hilbert Cmpgd Group Area Goodman Tn · Marinette County |
25 | 3 | 1 | |
|
Lake Holcombe Lions Public Park Holcombe · Chippewa County |
25 | 0 | 0 | |
|
Lake Katherine Beach Hazelhurst · Oneida County |
25 | 0 | 0 | |
|
Lake Kountry INC Osceola · Polk County |
25 | 0 | 0 | |
|
Lake Lenwood Resort West Bend · Washington County |
25 | 0 | 0 | |
|
Lake Lucerne Dellwood Neshkoro · Waushara County |
25 | 0 | 0 | |
|
Lake Lucerne Hillcrest Neshkoro · Waushara County |
25 | 0 | 0 | |
|
Lake Lucerne Milt Giese Dining Hall Neshkoro · Waushara County |
25 | 0 | 0 | |
|
Lake Lucerne-Youth Lodge Neshkoro · Waushara County |
25 | 0 | 0 | |
|
Lake Nebagamon Village Inn Lake Nebagamon · Douglas County |
25 | 0 | 0 | |
|
Lake Owen Resort Cable · Bayfield County |
25 | 0 | 0 | |
|
Lake Pepin Cmpgd Pepin · Pepin County |
25 | 0 | 0 | |
|
Lake Road Cmpgrnd Trempealeau · Trempealeau County |
25 | 0 | 0 | |
|
Lake Sherwood Lodge Nekoosa · Adams County |
25 | 0 | 0 | |
|
Lake Tom Tap House Lake Tomahawk · Oneida County |
25 | 0 | 0 | |
|
Lake Tomahawk Bible Church Lake Tomahawk · Oneida County |
25 | 0 | 0 | |
|
Lake View RV Park and Cabins Chilton · Calumet County |
25 | 1 | 1 | |
|
Lake Wapogasset Park Landing Amery · Polk County |
25 | 0 | 0 | |
|
Lakefront Mobil Delavan · Walworth County |
25 | 0 | 0 | |
|
Lakeland Airport Arbor Vitae · Vilas County |
25 | 0 | 0 | |
|
Lakelife Lake Nebagamon · Douglas County |
25 | 0 | 0 | |
|
Lakes Inn 2 the Nekoosa · Adams County |
25 | 0 | 0 |
About this data
Rules violated counts the rules a system was in violation of in the past three years, including monitoring and reporting lapses; one rule can carry several violations. Unresolved is the number of those rules currently in violation at EPA's latest data refresh.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Wisconsin records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet.